Valve



J. M. RAKUS May 27, 1958 VALVE Filed Sept. 6, 1957 INVENTOR JozEF M. RAKus ATTORNEYS United States Patent() VALVE Jozef M. Rakus, Plainfield, N. J.

Application September 6, 1957, Serial No. 682,509

13 Claims. (Cl. 251-182) rlhis invention relates to improvements in pipeline valves generally, and more particularly, to a novel means embodying non-metallic plastic material in such valves for maintaining a positive seal between the valve body and the valve chamber.

lt is an object of the present invention to provide a valve which is simple and economical to manufacture and yet will insure a completely leakproof structure.

Another object of this invention is to provide a high pressure valve of the plug type, in which the plug is cylindrical rather than tapered and is' easily rotated to either open or closed position.

A further important object of the present invention is to provide a pipeline valve in lwhich the valve body chamber is formed with a nished liner of a suitable alloy or is chromium plated, and in which the plug is expandible to insure a leakproof structure and yet is easily rotatable to open and closed positions.

Another important object of this invention is to provide in a plug valve with a full size through passage in the plug simple and etective means at the contiguous cylindrical surfaces of the valve chamber and plug for reducing to a minimum the erosion of the material of the valve by the substance passing through the valve when the plug is moved to or from one position of opening or closure to another position.

A still further object of the invention is the provision of a valve consisting of compartively few parts in compact arrangement, easily adaptable to either manual or power operation, economical to produce, and having a long life without the necessity of lubrication or other maintenance servicing.

Other objects and advantages will become apparent from the following description of embodiments of the present invention illustrated in the accompanying drawing, and in which:

Figure l is a longitudinal vertical central section of the valve showing the plug in 4fully open position;

Figure 2 is a horizontal sectional view of the upper or stem end portion of the valve, the section being taken on the lines 2-2 of Figure 1;

Figure 3 is a transverse vertical sectional view taken on the lines 3 3 of Figure 2; and

Figure 4 is an enlarged, perspective, partly exploded view of a modilied form of valve plug.

ln the drawing like reference numerals relate to like or similar parts throughout the views.

Referring to Figures l to 3, the valve unit comprises a cast or forged body provided with a cylindrical chamber 11 and diametrically opposed inlet and outlet ports i2, suitable flanges 13 being provided for coupling the same to a pipeline or lines or other forms of conduit. A cylindrical valve plug 14 is located in the chamber 11 and rotatable therein by means of a stem 15 secured to the upper end thereof. The valve chamber may be chromium plated or otherwise made resistant to wear as by a brass or bronze liner 11a.

The valve plug 14 comprises a pliable cylindrical core and velocities.

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16' formed of resilient material such as natural or hypalon rubber, Teon, Neoprene, or similar material, and which is provided with a transverse passage 17 for the reception of two metallic tubes 18. These tubes at their inner, adjacent ends are telescoped together as at 19. At their outer ends the tubes 18 are provided with semicylindrical llanges 20 conforming to the wall of the chamber 1l. The tianges 2li closely conne the pliable cylinder 16 and, at their meeting edges, are telescoped with respect to each other as indicated at 21. The kind of pliable material employed for the cylinder 16 Will of course depend on the particular liquid transmitted, as well as Working temperature and pressure. Y

Above the valve plug there is provided a sealing element in the form of a pliable washer 22 upon which pressure may be exerted by the bonnet 23, and through which the operating stem 15 extends. The stem is provided at its inner end with a polygonal head 24 imbedded inthe pliable cylinder 16, and at its upper end (not shown) is formed or provided with any desired means for manual or power operation as is well known in the art. Means for limiting rotation of the valve to a quarter turn may be in any form desired. As here illustrated a pin 25 and groove or slot 26 are provided, the pin 2S being inserted in the upper face of the bonnet and the slot or groove 26 being formed in the lower face of a disc or flange 27 secured to the stem 15. The slot 26 is arcuate in form and substantially 90 in extent.

in the modiiied form of valve plug shown in Figure 4, the construction is generally the same as in Figures l to 3. in this form, however, the flanges 20 of the tubes 1S are fore-shortened so as not to provide meeting telescoping edges, and the pliable core 16' is extended radially at the lateral portions 29 to conform to the inner cylindrical Wall of the valve chamber 11. These portions 29 are thus arranged to provide the necessary seal at the ports 12 when the valve plug is turned to the closed position. The core 16' is provided with Windowlike recesses 39 to receive the anges 20.

A construction similar to the above could be employed in constructing a ball valve, the pliable material being of ball-like form with the metallic tubular elements inserted therein to form the flow passage.

By reason of the provision of the resilient core in both forms of construction, the ilanged tubes of the valve plug are constantly urged into substantially uid tight engagement with the Wall of the cylindrical main chamber ofthe valve body, to provide the necessary sealing engagement.

lt will also be noted that the passages through the valve body and plug are full size, that is, of uniform diameter with the conduit in which the valve is to be employed. As is known in the art, an unobstructed full flow passage is much desired to eliminate damaging effect of churning or turbulence when the valve is used in lines handling abrasive-laden fluids at high pressures Scrapers or the like may also be run through the lines provided with such valves without danger of damage to the same.

l. A valve comprising a body provided with a cylindrical chamber and having a plurality of ports, a rotatable plug disposed in said chamber for opening and closing said ports, said plug including telescoping tubular members, arcuate flanges on the outer ends of saidv members, and resilient means between said flanges for urging said members into contact with the cylindrical wall of said chamber.

2. A valve as set forth in claim l wherein the cylindrical chamber of the body lis faced with a copper alloy lining. .A

' lic -insertsarefof'suchextent as to Y the-other. Y

Av-valve as set forth inV claim 1 wherein the cylin- 'n dricalchamber'ischromeiaced Y 4. Avalve comprising a body .provided with a cylindrical chamber and having a plurality of ports, a rotat- 'ableplug disposedin said chamber, said plug lbeing .-formedof resilient mater-iai:having` an opening therethrough,"tubular. metallicfin'serts in said opening coop-V erating with saidports forppening and closing the same -npon'rotation -of the plug',Y said resilient material urging Y the inserts Vinto contact with Vthe -cylindricaljwwall of said Acfharnber. Y

Y 5'. A valve as seti'fworthinclairn 4 wherein theV cylindrical'chamber isy chromev faced. Y

6,. Av'alve as set forthY in claim 4 vwherein the metalv telescope Vone Ainto 7. A valve rvas* set'forth in fev/herein theY cylin- .V drical chamber Vis provided with a liner for reducing Wear.Y 8. A vvalve `comprising a body provided with ya cylindrical lchambery and having a plurality of ports extending'"therethrough,` arotatableplug disposedl insaid chain-1 herj" said 'plug being formed ofresilient material having in claimV Sfwherein the metal- "10. A valve as setforth i'n claim '9 wherein the cylindrical chamber is .provided with a liner for reducing 'wear'.

ll. A valve as set forth in claim 9 wherein the arcu- -ate iianges also are Vof such extent as totelescopeone into the other. T l K Y 1 12. A valve comprising a bodyv provided with a cylindrical chamber and having a plurality of ports, a rotatable plug `disposed insaid :chamber for opening and;l

Vclosing said ports, said plug including a pair of oppositely disposed, axially aligned, Aabutting tubular members Y 'Y for forming a passage through` ,said plug', said plug being of inherently resilient; material Yfor urging` said membersY into -contact 'with the cylindrical wall-fof-said chamber. y Y

13. A valve comprising a body provided with a dricalchamber and having .a plurality of ports, an in'- herently resilient rotatable plug disposed in Ysaid chamber for opening and closing said ports, said'plug including a `pair of oppositely disposed, axially aligned, abutting tubular Amenihersfto. form a passage .through .said

' plug, said members being providedwith arcuate seat 1 engaging anges lencon'ipa'ssing the Yperiphery of the resilient plug,'the adjacent terminal portions of suchf flanges being in telescopic relationship.

References Cited in theiile ofthis patent Y K UNITED STATES PATENTS n 1,840,498 YEnms'sani Iam-12,1932 3 2,584,161 scheren., Feb. 5, 1952 lic'insertsf'arerof such length as Vto telescope one into'the other.

g 735,645 Freed 'Feb. 21,Y 1956 

